Immigration and Customs Enforcement agents raided a business in Newark on Thursday, the city's mayor said, calling it an "egregious. act.

“Today, U.S. Immigration and Customs Enforcement (ICE) agents raided a local establishment in the city of Newark, detaining undocumented residents as well as citizens, without producing a warrant," said Mayor Ras Baraka.

He called what happened a violation of the Fourth Amendment of the U.S. Constitution, which deals with improper searches.

“U.S. Immigration and Customs Enforcement may encounter U.S. citizens while conducting field work and may request identification to establish an individual’s identity as was the case during a targeted enforcement operation at a worksite today in Newark, New Jersey," an ICE spokesperson said to NY1 in a statement Thursday night. "This is an active investigation and, per ICE policy, we cannot discuss ongoing investigations.”

It's the first raid NY1 has confirmed in the tristate since President Donald Trump took office on Monday.

On Wednesday, Alabama Sen. Katie Britt sent out a message on X that there were 308 arrests made by ICE on the first day of the Trump administration, which has pledged to mass deportations.

The post did not specify how many of the people arrested were wanted for crimes. President Trump has said his administration would target people with criminal records.

Immigration advocates in the city have expressed concern over who exactly will end up being targeted in any enforcement activity.

ICE data shows there were a similar number of people arrested on average per day in the last fiscal year of the Biden administration as the first day of the Trump administration.

Numbers from the Department of Homeland Security shows the average number of arrests per day from October 1, 2023 to September 30, 2024 was 310, which is just above the 308 arrests Sen. Britt cited in her social media post.

President Trump has taken action to have fewer restrictions on ICE while they carry out enforcement.

On Tuesday, a spokesperson from DHS sent out a statement announcing the elimination of a provision defining sensitive locations. Barring extreme circumstances laid out in the memo, it prevented ICE agents from going into certain places for immigration-related work.

That included houses of worship and schools.

Also Tuesday, the acting Deputy Attorney General sent out a memo, saying "federal law prohibits state and local actors from resisting, obstructing, and otherwise failing to comply with lawful immigration-related commands and requests."

The document also states that people who do not follow this could face potential prosecution.

On Thursday, New York Attorney General Letitia James responded, saying it would be unconstitutional.

"The President has made troubling threats to weaponize the U.S. Department of Justice’s prosecutorial authority and resources to attack public servants acting in compliance with their state laws, interfering with their ability to build trust with the communities they serve and protect," she said in a statement obtained by NY1. "Right now, these vague threats are just that: empty words on paper. But rest assured, our states will not hesitate to respond if these words become illegal actions."